Describes a ripple tank demonstration that displays interference patterns responsible for producing beats and provides photographs of computer simulations of various beat interference patterns. Includes programs for the computer simulation and equations of constructive interference paths in beat interference patterns. (Author/SK)

Describes a microcomputer-based, multichannel digital data acquisition system for acoustic signals. Hardware and software considerations are included. (JN)

Bank Street Laboratory (a set of hardware/software tools for measuring temperature, light, and sound) consists of a board that plugs into Apple microcomputers, cabling, software, and six probes. Discusses the laboratory's hardware, including the analog-to-digital converter, multiplier chip, and modular connectors. Circuit diagrams of components…

To improve availability of sound recordings for music students, Indiana University has digitized over 1,300 selections and made them available on two computer network servers. High-quality audio technology provides compact-disc-quality sound. Some technical difficulties remain, but users have adapted well to the new system. (MSE)

Describes apparatus, computer program (for Apple II), and procedures used in an experiment to determine the velocity of sound in air. In addition, the experiment focuses on the attention required in calibrating equipment and the measuring of both long distances and very short time intervals. (JN)